Insert a disk for installation of Ubuntu 12.04 and reboot your computer. Choose your language first and go next.

[2]

Push Enter key.

[3]

Select your language again.

[4]

Select your country for time-zone.

[5]

Select the locale.

[6]

Select "No" and set it manually on the next.

[7]

Select your keyboard layout.

[8]

Select your keyboard layout.

[9]

Set your server's hostname you'd like to set.

[10]

Set user account. The user set on here is administration user by default.

[11]

Input a user name used on the system.

[12]

Set password.

[13]

If you'd like to encrypt home directory, answer "Yes".

[14]

Make sure the time-zone is correct and go next.

[15]

This is the section for configure partition. This example select "Guided" like follows.

[16]

Select a disk to create partitions.

[17]

If it's OK all, answer "Yes".

[18]

Enter the amount of disks that you'd like to set for LVM volume group.

[19]

It's completed to configure partitions. If it's OK, answer "Yes".

[20]

Installation of base system proceeds.

[21]

Set Proxy if you use it. If not, Continue with empty.

[22]

Select if you set automatical update. automatical update is convenience but sometimes it causes troubles,
so if you use this server as a Mission Critical Server,
Don't use automatical update, it's better to update by manually after verification.